c = minus(a,b) : computes the difference of iData objects @iData/minus (-) function to compute the difference of data sets input: a: object or array (iData or numeric) b: object or array (iData or numeric) output: c: object or array (iData) ex: c=a-1; Version: Aug. 22, 2017 See also iData, iData/minus, iData/plus, iData/times, iData/rdivide